CN213067079U

CN213067079U - Hot roasting furnace

Info

Publication number: CN213067079U
Application number: CN202021702222.5U
Authority: CN
Inventors: 朱冬生; 张力; 陈文龙; 王荣亮; 寇京利
Original assignee: Tianjin Zhiqin New Material Co ltd
Current assignee: Tianjin Zhiqin New Material Co ltd
Priority date: 2020-08-15
Filing date: 2020-08-15
Publication date: 2021-04-27
Anticipated expiration: 2030-08-15

Abstract

The application relates to a hot roasting furnace, which comprises a furnace body, wherein the furnace body comprises a hot roasting chamber and an air box chamber which are arranged up and down, the top of the air box chamber is provided with a feed opening, and the feed opening is communicated with the hot roasting chamber and the air box chamber; the indoor calcining device that is provided with of bellows, calcining device's top extend to hot calcining chamber and set up, and the tectorial membrane sand obtains fully being heated at the in-process that falls down, improves the heating effect to the tectorial membrane sand, and the tectorial membrane sand after the heating enters into the indoor portion of bellows and carries out the processing at next stage from the feed opening at bellows roof, improves tectorial membrane sand recycle. This application has the effect that improves tectorial membrane sand and retrieve.

Description

Hot roasting furnace

Technical Field

The application relates to the field of roasting furnaces, in particular to a hot roasting furnace.

Background

The precoated sand is molding sand with a layer of resin film coated on the surface of sand, is applied to the casting industry, and has the advantages of good demoulding performance, high surface smoothness of a casting and the like. After the coated sand is used, the resin on the surface is oxidized at high temperature, but the sand grains still have recovery value, and the prior coated sand recovery method is mostly to heat by using a roasting furnace.

The existing roasting furnace comprises a furnace body, wherein a feeding pipe is arranged at the top end of the furnace body, a discharging pipe is arranged at the bottom of the furnace body, porous bricks are arranged inside the furnace body, a heating device is fixedly arranged on the outer wall of the furnace body, the heating device is communicated with the inside of the furnace body and is arranged below the porous bricks, precoated sand can be slowly accumulated on the surfaces of the porous bricks when falling on the porous bricks and gradually slide down from gaps of the porous bricks, and the heating device heats the precoated sand in the sliding process; heating device's below is provided with the boiling subassembly, and the boiling subassembly includes fan and bellows, fan and furnace body outer wall rigid coupling, and bellows are located the furnace body and with the inner wall fixed connection of furnace body, and a plurality of vertical sand leakage holes that run through bellows are seted up to bellows, and sand leakage hole and bellows are inside not to communicate, and the upper surface of bellows is provided with a plurality of boiling posts, and boiling post and the inside intercommunication of bellows, and a plurality of air outlets have been seted up on the top of boiling post. The fan is with the air drum go into the bellows in, the air in the bellows passes boiling post and finally gets into inside the furnace body from the air outlet to the tectorial membrane sand that drives in the furnace body stirs, thereby makes tectorial membrane sand and the interior high-temperature gas of furnace body fully contact, improves the heating effect, and the tectorial membrane sand after the heating drops from leaking the sand hole, finally discharges in the furnace body from the discharge gate.

In view of the above-mentioned related technologies, the inventors consider that the conventional roasting furnace has a defect that the precoated sand is heated unevenly during use, resulting in a poor precoated sand recovery effect.

SUMMERY OF THE UTILITY MODEL

In order to improve the recovery effect of tectorial membrane sand, this application provides a hot roasting furnace.

The application provides a hot roasting furnace adopts following technical scheme:

a hot roasting furnace comprises a furnace body, wherein the furnace body comprises a hot roasting chamber and an air box chamber which are arranged up and down, the top of the air box chamber is provided with a feed opening, and the feed opening is communicated with the hot roasting chamber and the air box chamber; a roasting device is arranged in the air box chamber, and the top of the roasting device extends to the hot roasting chamber.

Through adopting above-mentioned technical scheme, when using this furnace body to heat the tectorial membrane sand, add the tectorial membrane sand to hot roasting chamber intracavity from the top of furnace body, the roasting device who runs through the bellows room setting heats the tectorial membrane sand, make the tectorial membrane sand obtain fully being heated at the in-process that falls down, improve the heating effect to the tectorial membrane sand, the tectorial membrane sand after the heating enters into the indoor portion of bellows and carries out the processing of next stage from the feed opening at bellows roof, reached the purpose that improves the recovery effect of tectorial membrane sand.

Preferably, the roasting device comprises an air box cavity, an air pipe and a combustion pipe, wherein an air inlet pipe is formed in one side of the air box cavity and penetrates through the furnace body to be communicated with the outside; the air pipe is vertical to the air box cavity and is communicated with the air box cavity, the combustion pipe is vertical to the air box cavity and penetrates through the air box cavity, and the bottom of the combustion pipe is communicated with a fuel gas inlet pipe; and a feeding opening is formed in the position of the air box cavity, which is opposite to the feed opening.

Through adopting above-mentioned technical scheme, when using this roasting device, let in the air from the air-supply line department, the air passes through the tuber pipe and enters the bellows indoor portion, simultaneously advance the pipe from the gas and let in the gas, the gas passes through the top that the burner tube reachd the burner tube, and start the inside ignition device of furnace body, light the gas of burner tube port portion, carry out the abundant heating to the tectorial membrane sand of whereabouts in the heat roasting chamber, the air that the air-supply line lets in provides sufficient oxygen for the furnace body is inside, ensure the stable burning of gas, to sum up, carry out the abundant heating to the tectorial membrane sand, improve the recovery effect of tectorial membrane sand.

Preferably, the top of the combustion pipe is sleeved with a large air cap, and the circumferential surface of the large air cap is provided with a gas hole.

By adopting the technical scheme, the large air cap sleeved on the top of the combustion pipe has a blocking effect on the combustion pipe, and coated sand is prevented from falling into the combustion pipe and blocking the combustion pipe in the falling process; the gas escapes from the gas holes on the circumferential surface of the large blast cap, so that stable output of the gas is ensured, the gas is not easy to be blocked by coated sand, and the stability of the combustion pipe in the use process is improved.

Preferably, a dust exhaust pipe is arranged on one side, opposite to the air inlet pipe, of the air box cavity, and the dust exhaust pipe is communicated with the air box cavity.

Through adopting above-mentioned technical scheme, the bellows die cavity can store up the dust in the use, regularly opens the dust exhaust pipe, clears up the inside dust of bellows die cavity, ensures the connectivity of bellows die cavity and tuber pipe for the tuber pipe can provide sufficient oxygen, reinforcing roasting equipment's result of use.

Preferably, the furnace body is a heat-insulating material pouring sealing furnace body.

Through adopting above-mentioned technical scheme, adopt thermal insulation material to pour the furnace body, and the furnace body is sealed furnace body, further improves the inside heat preservation effect of furnace body, reduces the inside thermal scattering and disappearing of furnace body, improves the heating effect of tectorial membrane sand in the furnace body, strengthens the recovery quality of tectorial membrane sand.

Preferably, the outer wall of the furnace body is fixedly connected with a lifting lug.

Through adopting above-mentioned technical scheme, at the outer wall rigid coupling lug of furnace body, make things convenient for the hoist and mount of furnace body when shifting and installation, further the convenience of use of very high furnace body.

Preferably, a flame viewing port is formed in the circumferential surface of the hot roasting chamber.

Through adopting above-mentioned technical scheme, set up the flame viewing aperture on the circumferential surface of hot roasting chamber, observe the inside flame combustion condition of furnace body with the help of the flame viewing aperture, monitor roasting device's in service behavior, trail the production progress, improve production quality.

Preferably, a hot gas conveying pipe is fixedly connected to the position, close to the top, of the hot roasting chamber, and the hot gas conveying pipe is communicated with the hot roasting chamber.

Through adopting above-mentioned technical scheme, the intercommunication sets up the steam conveyer pipe on the lateral wall of hot roasting chamber, and the steam that will retrieve is carried into the hot roasting chamber, improves the recycle of steam, and the consumption of the energy can be saved further improves the result of use of furnace body.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the roasting device is arranged in the air box chamber, so that the precoated sand is fully heated in the falling process, and the recovery effect of the precoated sand is improved;

2. the large blast cap is sleeved at the top of the combustion pipe, and the circumferential surface of the large blast cap is provided with the gas holes, so that the stability of the combustion pipe in the use process is improved;

3. the flame observation port is formed in the circumferential surface of the hot roasting chamber, so that the using condition of the roasting device is monitored, the production progress is tracked, and the production quality is improved.

Drawings

FIG. 1 is a schematic overall structure of the present application;

FIG. 2 is a schematic cross-sectional structure of the present application;

FIG. 3 is a schematic structural view of a roasting apparatus of the present application;

fig. 4 is an enlarged schematic view at a in fig. 3.

Description of reference numerals: 1. a furnace body; 11. lifting lugs; 12. a flame viewing port; 13. a hot gas delivery pipe; 2. a hot roasting chamber; 3. a bellows chamber; 31. a feeding port; 4. a roasting device; 41. an air box cavity; 411. a feed port; 42. an air duct; 421. a large hood; 422. a gas hole; 43. a combustion tube; 5. an air inlet pipe; 51. a dust exhaust pipe; 6. and (4) gas inlet pipe.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a hot roasting furnace. Referring to fig. 1 and 2, a thermal roasting furnace includes a furnace body 1, the furnace body 1 includes a thermal roasting chamber 2 and an air box chamber 3 which are arranged up and down, a feed opening 31 is arranged at the top of the air box chamber 3, and the feed opening 31 is arranged to penetrate through the thermal roasting chamber 2 and the air box chamber 3; be provided with roasting device 4 in bellows chamber 3, roasting device 4's top extends to the setting of hot roasting chamber 2 for the tectorial membrane sand obtains fully heating at the in-process that falls down, reaches the purpose that improves tectorial membrane sand recovery effect.

Referring to fig. 3, the roasting device 4 comprises an air box cavity 41, an air pipe 42 and a combustion pipe 43, wherein an air inlet pipe 5 is opened at one side of the air box cavity 41, and the air inlet pipe 5 penetrates through the furnace body 1 to be communicated with the outside; the air pipe 42 is vertical to the air box cavity 41 and is communicated with the air box cavity 41, the combustion pipe 43 is vertical to the air box cavity 41 and penetrates through the air box cavity 41, and the bottom of the combustion pipe 43 is communicated with the fuel gas inlet pipe 6; a feeding opening 411 is arranged at the position of the air box cavity 41 opposite to the feed opening 31. When using this baking equipment 4, let in the air from air-supply line 5 department, the air passes through inside tuber pipe 42 enters bellows room 3, simultaneously from gas advances pipe 6 and lets in the gas, the gas passes through the top that burning tube 43 reachs burning tube 43, and start the inside ignition of furnace body 1, ignite the gas of burning tube 43 port portion, carry out the abundant heating to the tectorial membrane sand that falls in the hot roasting chamber 2, the air that air-supply line 542 let in is furnace body 1 inside provides sufficient oxygen, ensure the stable burning of gas, to sum up, carry out the abundant heating to the tectorial membrane sand, improve the recovery effect of tectorial membrane sand.

With reference to fig. 3 and 4, the top of the combustion tube 43 is sleeved with a large funnel cap 421, and the large funnel cap 421 has a blocking effect on the combustion tube 43, so as to prevent the precoated sand from falling into the combustion tube 43 and blocking the combustion tube 43 in the falling process; the circumferential surface of the large hood 421 is provided with gas holes 422, and gas escapes from the gas holes 422 on the circumferential surface of the large hood 421, so that stable output of the gas is ensured, the gas is not easily blocked by coated sand, and the stability of the combustion pipe 43 in the use process is improved; the dust exhaust pipe 51 is arranged on one side, opposite to the air inlet pipe 5, of the air box cavity 41, the dust exhaust pipe 51 is communicated with the air box cavity 41, dust can be accumulated in the air box cavity 41 in the using process, the dust exhaust pipe 51 is opened periodically, the dust in the air box cavity 41 is cleaned, the connectivity between the air box cavity 41 and the air pipe 42 is ensured, the air pipe 42 can provide sufficient oxygen, and the using effect of the roasting device 4 is enhanced.

Referring back to fig. 1, the furnace body 1 is a heat insulating material pouring sealed furnace body 1, so that the heat preservation effect inside the furnace body 1 is further improved, the dissipation of heat inside the furnace body 1 is reduced, the heating effect of the precoated sand in the furnace body 1 is improved, and the recovery quality of the precoated sand is enhanced; the hot roasting chamber 2 is close to top position department rigid coupling and has steam conveyer pipe 13, and steam conveyer pipe 13 sets up with hot roasting chamber 2 intercommunication, and the steam that will retrieve is carried into hot roasting chamber 2, improves the recycle of steam, and the energy can be saved's consumption further improves the result of use of furnace body 1.

Referring to fig. 1, the outer wall of the furnace body 1 is fixedly connected with a lifting lug 11, so that the furnace body 1 can be conveniently lifted during transferring and installation, and the use convenience of the furnace body 1 is further enhanced; the circumferential surface of the hot roasting chamber 2 is provided with a flame viewing port 12, the flame combustion condition inside the furnace body 1 is observed by means of the flame viewing port 12, the using condition of the roasting device 4 is monitored, the production progress is tracked, and the production quality is improved.

The implementation principle of the hot roasting furnace in the embodiment of the application is as follows: when using this furnace body 1 to heat the tectorial membrane sand, add the tectorial membrane sand to the 2 intracavitys of hot roasting chamber from the top of furnace body 1, roasting device 4 heats the tectorial membrane sand, roasting device 4 lets in the air from air-supply line 5, the air passes through inside tuber pipe 42 entering bellows room 3, simultaneously from gas inlet pipe 6 department lets in the gas, the gas passes through the top that burner 43 reachs burner 43 through burner 43, and start the ignition device of furnace body 1 inside, light the gas of burner 43 port portion, the tectorial membrane sand of whereabouts carries out the abundant heating in the hot roasting chamber 2, the air that air-supply line 542 let in provides sufficient oxygen for furnace body 1 inside, ensure the stable burning of gas, to sum up, carry out the abundant heating to the tectorial membrane sand, improve the recovery effect of tectorial membrane sand.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A hot roasting furnace comprises a furnace body (1), and is characterized in that: the furnace body (1) comprises a hot roasting chamber (2) and an air box chamber (3) which are arranged up and down, the top of the air box chamber (3) is provided with a feed opening (31), and the feed opening (31) is arranged to penetrate through the hot roasting chamber (2) and the air box chamber (3); a roasting device (4) is arranged in the wind box chamber (3), and the top of the roasting device (4) extends to the hot roasting chamber (2).

2. A hot roasting furnace according to claim 1, characterized in that: the roasting device (4) comprises an air box cavity (41), an air pipe (42) and a combustion pipe (43), wherein an air inlet pipe (5) is formed in one side of the air box cavity (41), and the air inlet pipe (5) penetrates through the furnace body (1) and is communicated with the outside; the air pipe (42) is vertical to the air box cavity (41) and is communicated with the air box cavity (41), the combustion pipe (43) is vertical to the air box cavity (41) and penetrates through the air box cavity (41), and the bottom of the combustion pipe (43) is communicated with a fuel gas inlet pipe (6); and a feeding opening (411) is formed in the position of the air box cavity (41) opposite to the feed opening (31).

3. A hot roasting furnace according to claim 2, characterized in that: the top of the combustion pipe (43) is sleeved with a large air cap (421), and the circumferential surface of the large air cap (421) is provided with a gas hole (422).

4. A hot roasting furnace according to claim 2, characterized in that: and a dust exhaust pipe (51) is arranged on one side of the air box cavity (41) opposite to the air inlet pipe (5), and the dust exhaust pipe (51) is communicated with the air box cavity (41).

5. A hot roasting furnace according to claim 1, characterized in that: the furnace body (1) is a heat insulation material pouring sealing furnace body (1).

6. A hot roasting furnace according to claim 1, characterized in that: the outer wall of the furnace body (1) is fixedly connected with a lifting lug (11).

7. A hot roasting furnace according to claim 1, characterized in that: and a flame observation port (12) is formed in the circumferential surface of the hot roasting chamber (2).

8. A hot roasting furnace according to claim 1, characterized in that: and a hot gas conveying pipe (13) is fixedly connected to the position, close to the top, of the hot roasting chamber (2), and the hot gas conveying pipe (13) is communicated with the hot roasting chamber (2).